1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
const bitcoin = require("bitcoinjs-lib");
const config = require("./config");
const reverse = require("buffer-reverse");
const l = require("pino")();
const SATS = 100000000;
module.exports = (app, bc, db, emit) => async (req, res) => {
let { address, amount } = req.body;
let rawtx, hex, fee, total;
try {
amount = parseInt(amount);
rawtx = await bc.createRawTransaction([], {
[address]: (amount / SATS).toFixed(8)
});
rawtx = await bc.fundRawTransaction(rawtx, {
subtractFeeFromOutputs: amount === req.user.balance ? [0] : []
});
({ hex, fee } = rawtx);
fee = parseInt(fee * SATS);
total = amount + fee;
} catch (e) {
l.error(e);
return res.status(500).send(e.message);
}
try {
l.info("sending coins", req.user.username, amount, fee, address);
await db.transaction(async transaction => {
let { balance } = await db.User.findOne({
where: {
username: req.user.username
},
lock: transaction.LOCK.UPDATE,
transaction
});
if (amount !== balance && total > balance) {
l.error("amount exceeds balance", amount, fee, balance);
throw new Error("insufficient funds");
}
req.user.balance -= total;
await req.user.save({ transaction });
});
} catch (e) {
l.error(e);
return res.status(500).send("Not enough satoshis");
}
try {
if (config.bitcoin.walletpass)
await bc.walletPassphrase(config.bitcoin.walletpass, 300);
rawtx = (await bc.signRawTransactionWithWallet(hex)).hex;
let txid = await bc.sendRawTransaction(rawtx);
let tx = bitcoin.Transaction.fromHex(rawtx);
await db.transaction(async transaction => {
await req.user.save({ transaction });
emit(req.user.username, "user", req.user);
const payment = await db.Payment.create(
{
amount: -total,
fee,
user_id: req.user.id,
hash: txid,
rate: app.get("rates")[req.user.currency],
currency: req.user.currency,
address,
confirmed: true,
received: false,
asset: 'BTC',
},
{ transaction }
);
emit(req.user.username, "payment", payment);
res.send(payment);
});
} catch (e) {
l.error(e);
return res.status(500).send(e.message);
}
};
|
